Display screen or portion thereof with a graphical user interface



A portion of the disclosure of this patent document contains material to which a claim for copyright and trademark is made. The copyright and trademark owner has no objection to the reproduction by any one of the patent document or the patent disclosure, as it appears in the U.S. Patent and Trademark Office patent file or records, but reserves all other copyright and trademark rights whatsoever.

FIG. 1 is a front view of a display screen or portion thereof with a graphical user interface showing our new design;

FIG. 2 is a second embodiment thereof;

FIG. 3 is a third embodiment thereof; and,

FIG. 4 is a fourth embodiment thereof.

The outermost dashed lines in the figure show a display screen or portion thereof, and form no part of the claimed design. The other broken lines in the figures show portions of the graphical user interface that form no part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with a graphical user interface, as shown and described. 